Dictionary

mod•u•late

Pronunciation: (moj'u-lāt"),
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[key]—v.,-lat•ed, -lat•ing.

—v.t.1. to regulate by or adjust to a certain measure or proportion; soften; tone down.
2. to alter or adapt (the voice) according to the circumstances, one's listener, etc.
3. Music.a. to attune to a certain pitch or key.
b. to vary the volume of (tone).
4. Telecommunications.to cause the amplitude, frequency, phase, or intensity of (a carrier wave) to vary in accordance with a sound wave or other signal, the frequency of the signal wave usually being very much lower than that of the carrier.

—v.i.1. Telecommunications.a. to modulate a carrier wave.
b. CB Slang.to talk; visit: Enjoyed modulating with you.2. Music.to pass from one key to another: to modulate abruptly from A to B flat.